28 Nov Abaqus 2024 release available
This document provides information on a subset of new and enhanced functionality delivered in the Abaqus 2024 GA release as well as functionality added in the first five FD (Fix Pack) releases of Abaqus 2023. Please refer to the Abaqus Release Notes in the 2024 SIMULIA User Assistance for additional details on these enhancements.
The 2023 FD (Fix Pack) release in which new or enhanced functionality was delivered is indicated below using the convention FDxx (FP.xxxx); otherwise, the functionality was delivered in the 2024 GA release.
Abaqus 2024 key features
Abaqus Introduction & Spatial Modeling
Defining Rebar Lines in Beam Elements – 2023 FD01
You can specify one or multiple rebar lines of reinforcement in beam elements. For each rebar line, you specify the rebar properties including the rebar line name, the cross-sectional area of each rebar, the positions of the rebars with respect to the local beam section axis, and the rebar material name.
Benefit: This feature extends the capabilities of Abaqus/Standard and Abaqus/Explicit.
Abaqus/CAE
Python 3
Abaqus Python and Abaqus/CAE are now based on Python 3.10 instead of Python 2.7.
Benefit: This update brings Abaqus Python into conformance with a version of Python that is supported in the open-source community.
Render Styles in Plots for Continuum Particle Elements
Abaqus/CAE now supports visualization of element particle edges with wireframe, hidden, filled, and shaded render styles (View > ODB Display Options).
Benefit: The ability to assign different render styles makes it easier to distinguish between continuum particle elements.
Step-Dependent General Contact
Abaqus/CAE now supports the definition of general contact in Abaqus/Standard in any analysis step or in the initial step.
Benefit: Defining general contact in analysis steps enables definition of more complex contact behaviors in Abaqus/Standard simulations.
Contact Mass Scaling
Abaqus/CAE now supports the definition of contact mass scaling in Abaqus/Explicit.
Benefit: Contact mass scaling can reduce the number of increments required for Abaqus/Explicit simulations that use nondefault penalty stiffness.
Channel and Hat Section Profiles
You can now define channel and hat section profiles in the Property module.
Benefit: The addition of channel and hat profiles simplifies the specification of these common beam cross-sections in Abaqus/CAE.
Beam Section Offset for *BEAM SECTION
Abaqus/CAE now supports the definition of a beam section offset for beam sections integrated during the analysis (*BEAM SECTION).
Benefit: Beam offsets allow greater flexibility when modeling with beam elements in Abaqus/CAE.
Rotational Couplings
You can now define a rotational coupling type in discrete fasteners and coupling constraints in Abaqus/CAE.
Benefit: Defining the rotational coupling type gives you greater control over the behavior of distributing couplings involving cloud nodes with rotational degrees of freedom.
Using the Linearized Contact Capability to Solve for Contact Status and Contact Stresses
Abaqus/CAE now supports the activation of the linearized contact capability to solve for contact status and contact stresses within a static perturbation step with small-sliding, frictionless contact.
Benefit: The Linear Complementarity Problem (LCP) solution technique provides a faster solution for certain classes of contact problem.
Defining a Fluid Pressure Penetration Load – 2023 FD01
You can now create a fluid pressure penetration load to define a fluid pressure over a surface.
Benefit: This functionality extends the capabilities of Abaqus/CAE.
Analysis
Formation of Tie Constraints in Import Analysis
In an Abaqus/Explicit import analysis, Abaqus/Explicit now forms tie constraints using the original instead of the updated configuration if the definitions of both the main and secondary surfaces to be tied are unchanged from the original analysis.
Benefit: The new protocol makes it easier to establish initial equilibrium due to tie constraints in the imported model.
Adjoint Sensitivity Analysis for Sizing Optimization in Direct Steady-State Dynamic Analysis
You can now compute adjoint sensitivities for select node responses defined over node sets for a direct steady-state dynamic analysis to perform sizing optimization.
Benefit: You can now optimize for the steady-state response (direct-solution) of a structure subjected to harmonic excitations.
Monitoring Nodal Solution within Substructures – 2023 FD04
You can now specify a set of monitor nodes in a substructure generation analysis and then acitivate monitoring of these nodes in a substructure usage analysis. The specified node set data is stored on the substructure database, and Abaqus/Standard automatically generates the monitor nodes for the substructure usage analysis.
Benefit: You can now more easily observe and analyze the solution within substructures in its usage analysis.
Thickness and Orientation Sizing of Composite Shell in Adjoint Design Sensitivity Analysis – 2023 FD04
You can now use composite shell elements in adjoint design sensitivity analysis. In earlier releases, you could use only regular (non-composite) shell elements.
You can specify a thickness or an orientation angle of a composite shell layer as a design variable to calculate the sensitivities, which are the derivatives of the design responses with respect to these design variables. Figure 1 shows the sensitivities due to orientation angle of a composite layer, which is modeled with orthotropic material.
Benefit: You can now define a thickness and an orientation angle of a composite shell layer as a design variable in an adjoint sensitivity analysis.
Local Normal Stiffness – 2023 FD04
You can now provide surface local normal stiffness output in an eigenvalue extraction analysis.
Benefit: This feature helps to estimate how a certain panel or shell structure locally resists to the normal loads. It also helps to indicate the compliant regions and optimize designs.
Modeling Deterioration and Aging in Lithium Ion Batteries – 2023 FD03
You can use Abaqus/Standard to model lithium ion battery aging.
A rechargeable lithium ion battery undergoes different degradation mechanisms that result in reduced capacity over time.
Benefit: You can simulate the degradation in the capacity of rechargeable lithium ion batteries during repeated charging-discharging cycles, thereby gaining a better understanding of the aging process as well as the useful battery life.
Modeling Solid Electrolytes and Solid-State Batteries – 2023 FD03
You can use coupled thermal-electrochemical analysis and fully coupled thermal-electrochemical-structural analysis to model solid electrolyte and solid-state batteries.
Benefit: Modeling solid electrolytes allows you to simulate solid-state batteries.
Beam-to-Surface Submodeling – 2023 FD03
You can now perform submodeling from a global model with beam elements to a submodel with solid elements.
Using beam elements in a global model is often effective for efficiently predicting the global response. Submodeling with solid elements can be effective for more detailed resolution of stress or other quantities of interest in local regions. Beam-to-surface submodeling imposes conditions on the surface where the submodel has been cut from the global model.
Benefit: Support for beam-to-surface submodeling enables you to study critical sections of beams in great detail.
Importing External Fields – 2023 FD03
Changes to the keyword interface make it easier to import external fields over a time range. This functionality is now available in both Abaqus/Explicit and Abaqus/Standard. In addition, you can benefit from improved algorithms for importing, mapping, and searching field data.
Benefit: The improved keyword interface makes it easier to define how Abaqus transfers and interpolates the field data in time. Reducing the number of data transfer and mapping operations lowers the computational cost for most sequential workflows. Allowing external fields to vary in time in Abaqus/Explicit enables new types of analyses.
Arbitrary Lagrangian-Eulerian (ALE) Adaptive Meshing Supports General Contact – 2023 FD03
You can now use ALE adaptive meshing with the general contact definition.
Benefit: Support for general contact allows better parallelization for ALE analyses, which improves performance.
Modeling Slurry Transport and Placement Using XFEM – 2023 FD02
Hydraulically driven fracture simulations using the extended finite element method (XFEM) can now include slurry transport and placement.
Benefit: This feature extends the capabilities of Abaqus/Standard.
Progressive Release eXplicit-VCCT Method – 2023 FD02
You can now use the progressive release eXplicit-VCCT method (PRX-VCCT) to model material delamination or crack propagation.
Benefit: The results show that during debonding, the response with the PRX-VCCT model is smoother compared to the conventional VCCT model.
Design Responses and Adjoint Sensitivities in a Linear Perturbation Step – 2023 FD01
For bead, shape, and sizing sensitivities in a static linear perturbation step following a general static step, the design responses and adjoint sensitivities are computed based upon the total values of the appropriate physical quantities. Here, total refers to the sum of the physical quantities from the general and the perturbation steps.
Benefit: This approach is particularly useful when the general step represents the preloading and the assembly process of a structure while the perturbation step, which is typically composed of a number of load cases, represents service and live loads.
Constraints
Uniform Coupling Constraints – 2023 FD02
Uniform coupling constraints are available.
Uniform coupling is another type of surface-based coupling constraint. Existing kinematic coupling and distributing coupling constraints act on mechanical degrees of freedom. A uniform coupling constraint imposes uniformity in the value of a nonmechanical degree of freedom among nodes involved in the coupling. Multiple uniform couplings can act on the same nodes to impose uniformity of multiple nonmechanical degrees of freedom, such as temperature and electric potential.
Benefit: The equivalent of a kinematic coupling on nonmechanical degrees of freedom can now be defined. This feature extends the capabilities of Abaqus/Standard and Abaqus/Explicit.
Elements
Abaqus/CAE Support for Defining the Offset for the Origin of a Beam Section
You can now use Abaqus/CAE to define an offset for origin of the beam section.
Benefit: The new protocol makes it easier to establish initial equilibrium due to tie constraints in the imported model.
New Second-Order Tetrahehral Element for Fully Coupled Temperature-Displacement Analysis – 2023 FD04
A new second-order tetrahedral element C3D10T is available for fully coupled temperature-displacement analysis in Abaqus/Explicit.
Benefit: The new second-order tetrahedral element provides improved accuracy and performance in fully coupled temperature-displacement analyses.
Modeling Lithium Species Concentration – 2023 FD03
The existing electrochemical elements have been enhanced for the modeling of solid electrolytes or solid-state batteries to solve for the diffusion of species (DOF 34).
The term “species” refers to the chemical species that participates in the primary electrochemical reactions in the battery.
Benefit: You can simulate solid-state batteries that utilize solid electrolytes.
Interactions
Contact Involving Beams with Noncircular Cross-Sections in Abaqus/Standard – 2023 FD04
Contact calculations considering actual beam cross-sections are now available for general contact in Abaqus/Standard.
By default in Abaqus/Standard, contact edges representing beam elements have a circular cross-section, regardless of the actual cross-section of the element. The radius of the contact edge is equal to the radius of a circumscribed circle around the section.
Benefit: The new contact treatment of beams with noncircular cross-sections is more realistic and more accurate.
Evolving Surface Thickness in Abaqus/Explicit – 2023 FD03
Thicknesses considered in contact calculations can now represent increases and decreases to shell or membrane element thickness, although the default behavior remains to treat the contact surface thickness as constant.
Benefit: Accounting for both increases and decreases in shell thickness calculations enables more realistic simulation results.
Edge-to-Edge Cohesive Contact with Circular Beams in Abaqus/Explicit – 2023 FD03
Cohesive behavior is now available with edge-to-edge contact interactions for edges associated with circular beams in Abaqus/Explicit.
Benefit: Enhancing the cohesive behavior to include edge-to-edge contact with circular beams increases robustness and accuracy for beam modeling.
Flux at Contact Interfaces – 2023 FD03
Abaqus/Standard now considers interface fluxes associated with additional fields relevant to thermal-electrochemical processes of solid electrolyte and solid-state battery simulations.
Benefit: You can simulate solid-state batteries that utilize solid electrolytes and have higher energy densities and better operational safety characteristics compared to traditional liquid-electrolyte lithium-ion batteries.
Fluid Pressure Penetration Loads – 2023 FD01
Fluid pressure penetration loading associated with general contact now considers cohesive bond status, such that a surface region cannot become wetted while bonded until bonds are nearly failed.
Benefit: Cohesive bonds prevent extension of the wetted region for fluid pressure penetration loading associated with general contact.
Keywords
*NODE RESPONSE
You can use the new RANGE OPERATOR parameter to define the operator used for aggregating the sensitivities and design response values over the specified frequency range for the node responses in direct steady-state dynamic adjoint sensitivity analysis.
Benefit: This parameter allows you to control the calculation of the design response over a frequency range for the newly supported steady-state dynamic adjoint sensitivity analysis technique.
*OPERATOR OUTPUT
You can now use the *OPERATOR OUTPUT option in an uncoupled heat transfer analysis. In addition, the LOAD parameter can now take the value NET to output the net flux vector in an uncoupled heat transfer analysis.
Benefit: This feature expands the capabilities of Abaqus/Standard.
Materials
Nonisotropic Viscoelasticity in Abaqus/Standard – 2023 FD04
You can now define nonisotropic viscoelasticity for a material by specifying different Prony series for each component of the stiffness matrix. Orthotropic or transversely isotropic viscoelasticity can be defined.
Benefit: Defining nonisotropic viscoelasticity lets you describe the material behavior for composites more accurately.
Modeling Curing Processes – 2023 FD03
You can now use mean-field homogenization to model composite behavior during a curing process using a multiscale material model.
Benefit: The functionality extends the capabilities of Abaqus/Standard.
Modeling Curing Processes – 2023 FD02
You can now specify cure kinetics using the Grindling model or a user-defined form via user subroutine UCURE.
Benefit: You can now include a broad variety of cure behaviors in Abaqus/Standard.
Valanis-Landel Hyperelastic Model – 2023 FD02
You can now define the deviatoric response of the Valanis-Landel hyperelastic model by providing uniaxial and biaxial tensile test data.
Benefit: You can now define the Valanis-Landel hyperelastic material model using more easily performed tests.
Output
New Output Variables
STIFN
Local normal stiffness.
VN
Complex-valued surface normal velocity.
VNSQ
Real-valued surface normal velocity squared.
AVNSQ
Area-weighted surface normal velocity squared or acoustic power normalized by the acoustic impedance of the surrounding fluid.
FEXT
All components of external point loads from a co-simulation or external field definition.
MEXT
All components of external point moments from a co-simulation or external field definition.
DISP_NORMAL_VAL
The value of the bead optimization displacement along the node normal vector.
User Subroutines
New User subroutines
UCOHESIVEOFFSET
You can use the new user subroutine UCOHESIVEOFFSET to define an offset for the traction-separation response in cohesive elements that support fluid or slurry transport in Abaqus/Standard.
UCURE
You can use the new subroutine UCURE to specify a user-defined form of cure kinetics.
USETTLING
You can use the new user subroutine USETTLING to define the settling velocity of solid (proppant) particles in analyses that model slurry transport and placement inside a fracture.
VFILM
You can use the new user subroutine VFILM to prescribe nonuniform film coefficient and sink temperature for fully coupled thermal-stress analyses in Abaqus/Explicit.
VUTEMP
You can use the new user subroutine VUTEMP to prescribe temperatures at the nodes of a model in Abaqus/Explicit.
Do you need more info?
If you need more info about Abaqus 2024 release, do not hesitate to contact us or write us an email to sales@4realsim.com
